Which two actions should an engineer take to fix the cause of the problem?

Users are reporting that when they receive a second video call on a Cisco TelePresence EX60 and press "Accept and Merge", they can hear the audio but cannot see the video. Which two actions should an engineer take to fix the cause of the problem? (Choose two.)
A. Set the Cisco VCS Call Policy configuration to "Local CPL"
B. Set the Cisco VCS Conference Factory mode to "On."
C. Set the Endpoint Multipoint mode to "MultiWay."
D. Set the Endpoint DefaultCall protocol to "SIP."
E. Set the Endpoint ActiveControl mode to "Auto".